[issue1031] panic: hammer_mount: malloc limit exceeded

[Matthew Dillon]

:>     I believe I have fixed the lockup with commit 54.  I have also, I
:>     believe, completely fixed sequential read performance and have made
:>     good progress on sequential write performance.
:
:I have been unable to reproduce the lockup.
:
:Howewer, the original panic is back, this time after only about 5 minutes
:of copying:
:
:panic: hammer_mount: malloc limit exceeded
:mp_lock = 00000001; cpuid = 1
:Trace beginning at frame 0xdf1e28d4
:...
:-- 
:Francois Tigeot
:

    Ugh.  Do me a favor.  Do a 'sysctl vfs.hammer' every few seconds while
    you are copying and cut and paste the last few as of when it crashes.
    That will tell me which structure is blowing out the memory.

    Unfortunately it also looks like I have not completely fixed the
    lockup, my own testing (buildworld loop + blogbench + fsxtest) locked
    up overnight.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>